Kira Cochrane: Whether I've been 11st or 17st, I've always thought that I looked all right. However high my weight has gone, whenever I've peered in the mirror I've always looked exactly the same as I did when I was at my thinnest

Kira Cochrane: While I obviously understand the concept of calories out and calories in, I suspect that at the root of a huge amount of extra poundage lie not specific foods so much as diet deadlines and dread